Not sure about issues with early model 66 versus later model 66, but there was an issue with all K frame .357 magnums, whether SS or blued. The K frmes were made with the intent of practice with mild .38 Special cartridges, and carrying with .357 magnum loads. Some people shot lots of hot .357...
Brazilian model
According to the 3rd Edition of the Standard Catalog of Smith and Wesson, 200 of the 4-1/4" model were shipped to Brazil, and 23 were released to US distributors. I bought one new years back. I used it for an indoor PPC league one year, and for IDPA for a year or two. Great gun...
Hi Tommy. Thanks for the tip. I prefer to post links to the pictures so people can just look at the items they are interest in. I figure it may take a long time for this link to download, especially for those with older computers, if all of the full photos are posted. If people prefer full...